Directions: In each of the following sentences, the underlined portion may contain an idiom error. If there is no error, then choice A is correct.

1. Despite the growing world population, estimated at around 6 billion and growing every day, few economists believe the dire predictions of Thomas Malthus would come true.

  1. estimated at around 6 billion and growing every day, few economists believe the dire predictions of Thomas Malthus would come true
  2. estimated at around 6 billion people, growing every day, few economists believe the dire predictions of Thomas Malthus will come true
  3. estimated to be about 6 billion people and growing every day, few economists believe the dire predictions of Thomas Malthus will come true
  4. estimated to be around 6 billion and it grows every day, few economists believe the dire predictions of Thomas Malthus will come true
  5. estimated at about 6 billion people that grows every day, few economists believe that the dire predictions of Thomas Malthus would be true

2. Some adults lack the enzyme that splits lactose into simple sugars and thus find it difficult to digest milk products.

  1. into simple sugars and thus find it difficult to digest milk products
  2. down to simple sugars and thus find it difficult to digest milk products
  3. down to simple sugars and thus find difficulties in digesting milk products
  4. into simple sugars and thus finds it difficult for digesting milk products
  5. among simple sugars and thus finding it difficult to digest milk products

3. The effectiveness of a drug on a measurable variable, such as drowsiness, may depend on if the level for that variable is higher or lower at the time of the drug’s administration.

  1. if the level for that variable is higher or lower at the time of the drug’s administration
  2. if the level of that variable, higher or lower, is at the time of the drug’s administration
  3. the level of that variable at the time of the drug’s administration
  4. whether the level for the variable at the time of the drug’s administration is high or low
  5. whether the level of variables during the time of the administration of the drug is higher or lower

4. Doctors warn that those who are overweight have a danger to develop diabetes by the time they reach middle age.

  1. those who are overweight have a danger to develop diabetes by the time they reach middle age
  2. those that are overweight are in danger of developing diabetes at the time they reach middle age
  3. overweight people are in danger to develop diabetes by the time middle age is reached
  4. overweight people are endangered by developing diabetes by the time they reach middle age
  5. overweight people are in danger of developing diabetes by the time they reach middle age

5. Of the 85 political essays that comprise The Federalist Papers, it is certain that Hamilton wrote 51 of them, Madison, 14, and Jay, five; historians have a dispute about the authorship of the remaining fifteen.

  1. have a dispute about the authorship of
  2. have a dispute with the authorship of
  3. dispute about the authorship of
  4. dispute the authorship of
  5. are in dispute about the authorship of

Answers

  1. C
  2. A
  3. C
  4. E
  5. D